The existence of firewalls and air gaps implies that a truly comprehensive computer security posture ought to also involve earthworks and water cannons.
"Yes."
@snamellit @RogerBW @simontatham
Don't forget the molten lead (and possibly boiling pitch).
I'm in favour of bastion hosts (possibly filled with either basilisks or BOFHs (who may be nastier still)).
I have in the past said to a security department that I could tell their security posture had built in limits because they were not themselves staffing machine gun nests on the vital approaches to the datacentres.
@simontatham
‘Where is the system server kept?’
‘Did you notice the Mott and Bailey structure in the car park on your way in?’
There is no war in Bot Sing Se